細管内における強制流動サプクール沸騰限界熱流東の研究 : 限界熱流束実験データの検討

概要

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The critical heat flux (CHF) of subcooled flow boiling in a narrow tube was investigated experimentally using water as a coolant. Experiments were conducted at nearly ambient pressure under the following conditions : tube inside diameter : 1~3 mm, tube length : 10~100 mm, and water mass velocity : 7000~20000 kg/(m^2・s). The critical heat flux increases the shorter the tube length and the smaller the tube inside diameter, at the same water mass velocity and exit quality. Experimental data were compared with empirical correlations, such as the Griffel and Knoebel correlations for subcooled boiling at low pressure, the Tong correlation for subcooled boiling at high pressure, and the Katto correlation. The existence of two parameter regions was confirmed. The first is the low CHF region in which experimental data can be predicted well by Griffel and Knoebel correlations, and the second is the high CHF region in which experimental data are higher than the predictions by the above two correlations.
一般社団法人日本機械学会の論文
1986-04-25